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Sap Beetles (Coleoptera: Nitidulidae) in Oak Forests of Two Northeastern States: A Comparison of Trapping Methods and Monitoring for Phoretic Fungi
Journal of Economic Entomology ( IF 2.2 ) Pub Date : 2020-09-11 , DOI: 10.1093/jee/toaa195
Marc F DiGirolomo 1 , Isabel A Munck 1 , Kevin J Dodds 1 , Jessica Cancelliere 2
Affiliation  

Oak wilt is slowly expanding in the northeastern United States. Several nitidulid beetle species are known vectors of the fungus [Bretziella fagacearum (Bretz) Z. W. De Beer, Marinc., T. A. Duong, and M. J. Wingf (Microascales: Ceratocystidaceae)] that causes this disease, acquiring spores from fungal mats on infected trees and transmitting them to uninfected trees. Survey and fungal isolation from captured nitidulid beetles could be an important tool for detecting the presence of this disease in a geographic area not previously known to have oak wilt. In preparation for monitoring activities in such areas, two trapping studies were conducted in the northeastern United States: 1) trap test comparing the efficacy of wind-oriented pipe, multiple-funnel, and modified pitfall traps for nitidulids and 2) wet and dry collection cup comparison. Lures were a combination of nitidulid pheromones and fermenting liquid. Results support the use of multiple-funnel traps over the other two trap types, for both targeted species-specific surveys and community sampling. More total nitidulids, Colopterus truncatus (Randall), and Glischrochilus fasciatus (Olivier) were captured in wet collection cups compared with dry cups. Twenty-seven fungal species were isolated, none of which were B. fagacearum. Many fungi isolated from beetles were plant pathogens, indicating that in addition to the oak wilt fungus, sap beetles may contribute to the spread of other plant diseases.

中文翻译:

东北两个州橡树林中的树液甲虫(鞘翅目:Nitidulidae):捕获方法的比较和对游动真菌的监测

橡树枯萎病正在美国东北部缓慢蔓延。几种 nitidulid 甲虫物种是导致这种疾病的真菌 [Bretziella fagacearum (Bretz) ZW De Beer, Marinc., TA Duong, and MJ Wingf (Microascales: Ceratocystidaceae)] 的已知载体,它从受感染的树木上的真菌垫上获取孢子并传播他们到未受感染的树木。从捕获的 nitidulid 甲虫中进行调查和真菌分离可能是一个重要的工具,用于在以前不知道有橡木枯萎病的地理区域中检测这种疾病的存在。为准备在这些地区开展监测活动,在美国东北部进行了两项诱捕研究:1) 比较风向管、多漏斗和改良陷阱诱捕器对 nitidulids 的功效的诱捕试验,以及 2) 干湿收集杯子比较。诱饵是 nitidulid 信息素和发酵液的组合。结果支持在其他两种陷阱类型上使用多漏斗陷阱,用于针对特定物种的调查和社区抽样。与干杯相比,在湿收集杯中捕获了更多的总鸟尾蚴、Colopterus truncatus (Randall) 和 Glischrochilus fasciatus (Olivier)。分离出 27 种真菌,其中没有一种是 B. fagacearum。从甲虫中分离出的许多真菌是植物病原体,这表明除了橡树枯萎病菌外,树液甲虫还可能导致其他植物病害的传播。与干杯相比,Colopterus truncatus (Randall) 和 Glischrochilus fasciatus (Olivier) 被捕获在湿收集杯中。分离出 27 种真菌,其中没有一种是 B. fagacearum。从甲虫中分离出的许多真菌是植物病原体,这表明除了橡树枯萎病菌外,树液甲虫还可能导致其他植物病害的传播。与干杯相比,Colopterus truncatus (Randall) 和 Glischrochilus fasciatus (Olivier) 被捕获在湿收集杯中。分离出 27 种真菌,其中没有一种是 B. fagacearum。从甲虫中分离出的许多真菌是植物病原体,这表明除了橡树枯萎病菌外,树液甲虫还可能导致其他植物病害的传播。
更新日期:2020-09-11
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